<template>
  <el-header :style="'margin-bottom:'+ headerBottom +'px'">
    <h2 class="logo"><svg-icon icon-class="EarOfWheat" />  Blog</h2>
    <div class="bg-purple-light">
      <el-menu :default-active="activeIndex" router class="el-menu-demo" mode="horizontal" style="border: none;"
               background-color="rgba(0,0,0,0)" text-color="#fff" active-text-color="#ffd04b">
        <el-menu-item index="/cms/main/cmsIndex"><i class="el-icon-s-home" style="color: white;"></i>首页
        </el-menu-item>
        <el-menu-item :index="item.path" v-for="item in menulist" :key="item.id">
          <!--                图标-->
          <i :class="item.icon" style="color: white;"></i>
          <!--                文本-->
          {{item.authName}}
        </el-menu-item>
      </el-menu>
    </div>
    <div class="bg-purple-light el-menu-hidden" v-if="menuHiddenVisiable">
      <el-menu :default-active="activeIndex" router background-color="rgba(84,92,100,0.5)" text-color="#fff"
               active-text-color="#ffd04b">
        <el-menu-item index="/cms/main/cmsIndex" @click="menuAway"><i class="el-icon-s-home"
                                                                      style="color: white;"></i>首页</el-menu-item>
        <el-menu-item :index="item.path" v-for="item in menulist" :key="item.id" @click="menuAway">
          <!--                图标-->
          <i :class="item.icon" style="color: white;"></i>
          <!--                文本-->
          {{item.authName}}
        </el-menu-item>
      </el-menu>
    </div>

    <div class="menu-expend" @click="menuExpend">
      <i class="el-icon-menu" style="color: white;"></i>
    </div>

    <div v-if="searchInput" class="search_input">
      <el-input @focus="checkInput" @blur="notSearching()" class="search" placeholder="搜索博客"
                prefix-icon="el-icon-search" v-model="queryInfo.query" size="mini">
      </el-input>
      <ul v-if="searching">
        <li class="animate__animated animate__fadeInDown search-blog" v-for="blog in searchList" :key="blog.id"
            @click="getBlogInfo(blog.id)">
          <a><span v-html="blog.title"></span></a>
        </li>
      </ul>
    </div>

    <div v-if="islogin" class="bg-purple">
      <el-dropdown class="avatar-container right-menu-item hover-effect" trigger="click">
        <div class="avatar-wrapper">
          <el-avatar class="user-avatar" :src="avatar" @error="errorHandler">
            <i class="el-icon-s-custom" />
          </el-avatar>
          <p class="avatar-Name">{{name}}</p>
        </div>
        <el-dropdown-menu slot="dropdown">
          <router-link target="_blank" to="/index">
            <el-dropdown-item>管理博客</el-dropdown-item>
          </router-link>
          <el-dropdown-item divided @click.native="logout">
            <span>退出登录</span>
          </el-dropdown-item>
        </el-dropdown-menu>
      </el-dropdown>
    </div>
    <div v-else class="bg-purple">
      <div class="avatar-wrapper">
        <!-- <el-avatar class="avatar" src="avatar" @error="errorHandler">
            <i class="el-icon-s-custom" @click="tologin"/>
          </el-avatar> -->
        <p class="avatar-Name" @click="tologin">登录|注册</p>
      </div>
    </div>
  </el-header>
</template>

<script>
import {
  mapGetters
} from 'vuex'
import {
  getToken
} from '@/utils/auth'
import 'element-ui/lib/theme-chalk/display.css'
import {
  cmsListBlog,
} from "@/api/cms/blog";
export default {
  name: 'cmsNavBar',
  data() {
    return {
      activeIndex: 'this.$router.path',
      islogin: false,
      searchInput: true,
      menuHiddenVisiable: false,
      headerBottom: 0,
      queryInfo: {
        query: '',
        timer: null
      },
      searchList: [],
      searching: false,
      menulist: [{
        id: 1,
        authName: '随笔',
        path: '/cms/main/essay',
        icon: 'el-icon-edit',
      },
        {
          id: 2,
          authName: '留言',
          path: '/cms/main/message',
          icon: 'el-icon-chat-dot-round',
        },
        {
          id: 3,
          authName: '聊天',
          path: '/cms/main/privateMessage',
          icon: 'el-icon-chat-dot-round',
        },
        {
          id: 4,
          authName: '百宝箱',
          path: '/cms/main/box',
          icon: 'el-icon-chat-dot-round',
        },

      ],
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        title: null,
        type: 1,
        content: null,
        top: null,
        views: null,
        status: null,
      },
    };
  },
  computed: {
    ...mapGetters([
      'avatar',
      'name'
    ]),
  },
  watch: {
    'queryInfo.query': {
      handler(value) {
        if (this.timer) {
          clearTimeout(this.timer)
        }
        this.timer = setTimeout(() => {
          this.searchBlog()
        }, 300)
      }
    }
  },
  created() {
    this.login();
  },
  methods: {

    // 展开菜单栏
    menuExpend() {
      this.menuHiddenVisiable = !this.menuHiddenVisiable
      if (this.menuHiddenVisiable === true) {
        this.headerBottom = (this.menulist.length + 1) * 56
      } else {
        this.headerBottom = 0
      }
    },
    //收起菜单
    menuAway() {
      this.menuHiddenVisiable = false;
      this.headerBottom = 0;
    },
    notSearching() {
      setTimeout(() => {
        this.searching = false
      }, 100)
    },
    checkInput() {
      this.searching = this.queryInfo.query !== '';
    },
    tologin() {
      this.$router.push({
        path: "/cmsLogin"
      });
    },
    login() {
      let token = getToken();
      if (token == null || token == '') {
        this.islogin = false;
      } else {
        this.islogin = true;
      }
    },
    errorHandler() {
      return true
    },
    async searchBlog() {
      if (this.queryInfo.query === '') {
        this.searching = false
        return
      }
      this.queryParams.title = this.queryInfo.query;
      cmsListBlog(this.queryParams).then(response => {
        let lsitSize = response.rows.length;
        if(lsitSize>0){
          for(let i = 0;i<lsitSize;i++){
            let redTitle = this.brightenKeyword(response.rows[i].title,this.queryInfo.query);
            response.rows[i].title = redTitle;
          }
        };
        this.searchList = response.rows;
        if (this.searchList.length !== 0) {
          this.searching = true
        }
      });
    },
    //搜索关建字标红
    brightenKeyword(val, keyword) {
      const Reg = new RegExp(keyword, 'i');
      let res = '';
      if (val) {
        res = val.replace(Reg, `<span style="color: red;">${keyword}</span>`);
        return res;
      }
    },
    // 跳转到博客详情页
    getBlogInfo(blogId) {
      let routeUrl = this.$router.resolve({
        path: '/cms/main/blog',
        query: {
          id: blogId
        }
      });
      window.open(routeUrl.href, '_blank');
    },
    async logout() {
      this.$confirm('确定注销并退出系统登录吗？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        this.$store.dispatch('LogOut').then(() => {
          location.href = '/cms/main/cmsIndex';
        })
      }).catch(() => {});
    }
  }
}
</script>

<style scoped>
.el-header {
  display: flex;
  justify-content: space-between;
  background-color: rgba(0, 0, 0, 0.2);
  align-items: center;
  transition: .2s;
}

.el-header:hover {
  opacity: 1 !important;
}

.el-menu {
  flex-shrink: 0;
  background-color: rgba(0, 0, 0, 0) !important;
}

.el-menu /deep/ .el-menu-item {
  background-color: rgba(0, 0, 0, 0) !important;
}


.el-menu /deep/ .el-menu-item i {
  color: white;
}

.el-menu /deep/ .el-menu-item:hover i {
  color: white;
}

.el-menu /deep/ .el-menu-item:hover {
  background-color: rgba(0, 0, 0, 0.5) !important;
}

.search_input {
  position: relative;
  box-sizing: border-box;
}


.search_input ul {
  position: absolute;
  top: 30px;
  width: 100%;
  border: 1px solid #e5e9ef;
  margin-top: 1px;
  background: #fff;
  z-index: 10000;
  border-radius: 2px;
  box-shadow: 0 2px 4px rgba(58, 118, 142, 0.16);
  padding: 10px 0;
  font-size: 14px;
  box-sizing: border-box;
}

.search_input ul li {
  padding: 0 16px;
  height: 32px;
  line-height: 32px;
  cursor: pointer;
  word-wrap: break-word;
  word-break: break-all;
  display: block;
  color: #222;
  position: relative;
  /*transition: .2 ease;*/
}

.search_input ul li:hover {
  background-color: #e8f3ff;
}


.search-blog {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  padding-left: 20px;
  padding-right: 20px;
}

.bg-purple-light {
  float: right;
}

.bg-purple {
  float: right;
}

.user-avatar {
  float: left;
  cursor: pointer;
  border: dashed rgba($color: #ffff7f, $alpha: 0.5);
}

.avatar-container {
  margin-right: 30px;
}

.avatar-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.avatar-Name {
  margin-left: 10px;
  cursor: pointer;
  float: right;
  font-size: 16px;
  color: #ffffff;
}

.logo {
  float: left;
  color: aqua;
  font-weight: bold;
}

.logo:hover {
  cursor: pointer;
}

.el-menu-hidden {
  /*display: none;*/
  position: absolute;
  top: 60px;
  left: 0;
  border-top: 1px solid #ccc;
  border-right: none;
  width: 100%;
}

.menu-expend {
  display: none !important;
}

/* 窗口可视区域小于1000隐藏搜索框 */
@media screen and (max-width: 1000px) {
  .search_input {
    display: none;
  }
}

@media screen and (max-width: 768px) {
  .el-menu /deep/ .el-menu-item {
    background-color: rgba(0, 0, 0, 0.3) !important;
  }

  .el-menu-demo {
    display: none;
  }

  .menu-expend {
    display: block !important;
    float: right;
  }

  .menu-expend:hover {
    color: #ffd04b;
    cursor: pointer;
  }
}
</style>
